Evaporator.



No. 877,665. PATBNTED JAN` 28, 1908.

F. SAWYER. BVAPORATOR.

APPLICATION FILED JULY 1. 1907.

Y10 @uur eh:

, tunee ebt 7e t EVA? ORATOR.

Specification of Letters Patent.

:Patented Jun. 28, 1902i,

Application filed. Iulyl 1907. Serial No. 381.627.

To all whom il'. mu/g concern.'

Be it known that l, FLOYD Sturen, u oitizen ol the United States oi America, residing;

at Brighton, in the county ol Livingston uuu' State of Michigan, have invented Certain new and useful improvements in lveiiiorntors, oi which the 'following is u speeiiicution, reference being had therein to 'the mgzeeuumnying drawings.

This relates to en evapora.,u 'for deleoeting' or concentrating fruit and cene juices, end the lilre, and especially to u continuous process ev pointer provided with Ineens for 'utilizing both live and exl'iaust stem lor heating purposes and ulso with uutonmtio regule-ting devices for lioei4 ing u con stent level of liquid iiowing through the epperetus, and for meintaining e constant predetermined specific gravity in the ou tllowing productz Referring to the drawings, Figure i s z. View in perspective, parts being broken r to give oleo-r View, or en e'vuporetor enibrf ing the features of the invention. lig. Z e View in s Vertical, central section through feed or supply Trelire regulator end controller. in the drawings, 1 represents thc rnein body of.' a. tenl, preferably rectangular in shape, and oi eny desired end suitable construction l provides e, ifelse betteln of sheet motel Wi usually oi cop ier, parallel to und e. short dit# Vlie tenir bottom A. eentrel partition 4, extendinglhe greater portion ol the length oi the tank, divides it into two oompurtrients coiunfiunicuting with each other ero o the further end of the partition. These nre heet ed by e Het Ll-eoil 5 of steznn pipes support d on the false bottom 2 und provided with the usuel steuin control fittings et veoixenient points. An exhaust pipe 5 from 'the coils is so disposed, us to discharge into end of the tank, bet-.reen the tunlr bottoms. ny other uvoilsble exhaust steen: in the vicinity o the apparatus muy also be led into the between the bottoms, through the il?.

The fruit, sugar sep or rune juice to bo defeouted or reduced, is delivered 'to one end ol one compartment of the tank by u. supply pipe 7 whose end seotion is dou-'nturnod e gale o 'val 33 of ordinary pattern being inserted to cut oil' the flow when the apparatus g is not in. use. The lower oud of this supphr pipe extends into a. combined gege und llter chuinher 8 secured on the side of the tank by suitable means,

ing apparatus y I The chamber, in preferred. forni, i"

vertical cylinder divided by :t cxoss-pmti.on or lili-er bed bottom which is u cone of reuze or the like, or iuiporforftte motel, its edges hei/infr notches 10 which allow free egress to the liquid. This cone rests on lugs 1.1 on the Zylinder will, being thus readily removable for oleening, und euri-ies e bed 12 oi eoolsior or other like iiltrunt. A cylindrical vulve easing 13, oonoentrieslly secured on 'the end of the supply pipo 7, in axial olinenient therewith. tubular vulve sont projects upwardly from the bottoni of this easing, its upper end being closed, une haring apertures 34 formed in its pe riphery. A oyliurh'ioul hollow closure is axially reoiprooeble iu the seat, and is con ried by en upright stem 15, preferably tubular, to which it is secured by e cross-pin 36. Suid stem passes through e suitable guide 16 et the apex of the cone filter bow torn und is supported by u float 17 ol' proper construction in the lower comportment, the stem being extei'uled through the floot and having sliding engagement on on upright pi n 37 whereby it is held in ulinemont. Suitable sorewthree-ded connections between the vulve closure undstein admits of any required adjustment.

As'e detail of oonstruotion, it is advisable to have e eonioul delleotor 38 on the stern to liiluse the incoming stream over the filter bed and rtw/'ey from 'the stern und guide glands. A pipe 18 leeds troni the bottoni off the elisinoer into the trink below the de sired. Working" level of the Contents of the tank, so that the [lost in the eheinber oper etes the Valve and controls the supply' :tutonietioelly in en obvious iusuner.

A disol'ierge pipe 19 leads from the bottoni oi the other compartment, to an outlet valve 2 0, Whiohdiseherges overthe top of sin upright cylindrical regulating tank 39. A cylindrical dost 21, with oonioel ends, is suspended in this regulating tunk by e vertieul, uxiul stein 22, Whose upper end is hung on the power erin oi the lower liinb 23 of e compound lever., of the lli-st class, fuleruined on suitable brackets 24 on the side of the mein tank, the upper limb 25 being ertiou lated by u link 26 to the load endv of the lowenlirnb, and, in turn, being operatively articulated at its road end to the stein 27 of the outlet valve 20, which letter may be of any construction which operates readily in viscous liquids. I An f suitable form of spring levers to prevent the valve 20 lfrom -going way shut or open as the gravity of the prod-n uct varies.

ably, to insure "readiness and lightness of action, and a counterpoise arm 28 on the g lower limb With counterpoise Weightw29 adthe sensitiveness ofthe regulator.

To prevent the incoming stream 'from the outlet valve 20 falling upon the top' of the'- chec ring its float 21 and disturbing it or action, a deflecting plate 30 is rovided, which divides the stream and iverts it against the inner'sides ofthe regulating tank at different points.

The bottom of .the tank is coned to correspond to the lower end ofthe float 21, and an outlet pipe 31 extends upwardly from; the apex to the level which it is desired tomaintain inthe tank Where an elbow 32 the iloat therein partially buo deiines the level and forms a convenient outlet for the product.

It is to be'understoo'd that all the necessary `pipe fittings, skimming sluieeways, defecating chambers and other vnecessary appurtenances which do not er se form a part of the invention, are providbd.

In the initialstage of the operationrthe liquid to be reduced, concentrated vor defevcated, is turned into the tank through the iilterl chamber, iilling the apparatus to the' level determined by the float in the ilter chamber, the regulatin lloat in the re' lating tank being wei hte at its lower en and its counterpoise a justed sothat the outlet valve 'is closed. The steam is-then turned into the coils and the exhaustbetween the --tank bottoms, thus rapidl heating and evaporating vthe liquid. Vv en the latter has approached the consistency desired, the outlet valve is opened by raisin the levers by hand, until the regulating tan isfull 'and ed up by the liquid; the li uid gradually trickles through the valve in t eregulating tank, increasing in4 density until' it raises the float t'o its properheight, as the latter" is adjusted after the mannerof a specific gravity bulbi, to

float or rise' tofa certain point whenl a pre'- creases to the point Where the re determined density orspecific ravityin the iuid in-Which it is immersed,

T ereafterthe operation is continuous and automatic. As thedensity ofthe liquid ingulating `i ioat fully opens the outlet valve, it 1s drawnV oil rapidly, and theconsequent dro in the maintank level causes the filter c amber float to lwer and-so open the 'supply valve.

The incomin'gliquid is thus received atione end of the tank, is directed over `the fullv length of the coils and false bottom, and gradually reduced'as' it approaches the outsmaad or bindirg, the vloatstexn WorkinlgL ]ustably secured thereon further increases* e I different sources made available. Y f

is reached.`

armas, time t stie-it sais-@ringed oaiy'- 'so fast as'itreac es the require 'suflciently reduced, Witho t" on the part of the operat' f vOne ofthe features o disposition of parts ofthe,

itsloat controlled valve einem the dell separat end' bearilwinch'k at l 'alxnement'withthe va ve casing' an leseat,y

While the filter 4bed and bottom are easily re-ffmoved forrenevval'and cleaning.

Another featureis he arrangement of the l heatingmeanswhereby -th'e liquid is in conf tactthroughout its passage with a greatex- *lp tent of heating 'surface and whereby the fullest, heating power ofthe steam in the sysa 'tem is utilized and other Waste steam fro1 n 5 Another feature isl the 'arrangement ofth 8 regulating device. The specic gravity float; i"

may be made rlarge enough to Work the voutwith the sides4 ofl its tank, Itslever .cone nections with the outlet valve are delicat regulation of the ioat'so that it will operat to obtain. any desired density of produ'ct's'iNv Because ofV these featuresiof accurate adjustments and sensitiveness! of faction," thefz, apparatus producesa uniform product, reL gard'less of changes or fluctuations' in the heeft supplied, theautomatic control res ond' quickly and-holding the contents oft e't'a until eva orated to the proper consistencyiI What claim as my invention 1. In an evaporatmg apparatus hfwingan evaporating tank and an outlet valvemea'ns adapted to automatically close the; out'l'et" y valve when thes ecific gravity of the liquid-f falls below a predetermined oint, compris# a regulating. tank into W ich' the outlet? va ve discharges acylindrical specific grav- 'ity' float suspendedv by an axial stern-inthel contents `of the tank and compound levery connections between thevalve and :Goat stem adlilpted to. close the'r valve whenthe-iloatiif fa s. f I 2. In 'an evaporatingapparatus,an outlet'V valve, from the vevapo'rating tankand means adapted 4to automatically close the outlet valve when the s ecili'c gravity of the liquid falls below a pre eterininedfpoi'nt, consisting of a re lating tank finto which the outlet valve discharges a specific gravity float' im mersed in the contents" o the. ltank operatively connectedbyilevesto the valve, and 'a counterpoise adustoble on the level",v

adapted togchan'ge t e buoyancy of the oati'l' gravig-ialisbelgw .the predeterminedpoiht. 3. la .continuous process evaporating' apparatus, an outlet valve .troni the evaporating tank, a regulating tank into which the outlet valve discharges and in which the concentrated liquid is maintained at a constant level, a specific gravity 'float immersed in the liquid in. said regulating tank, operatively connected to the outlet valve, and adapted to close said valve when the speciiic gravity of the liquid falls below av predetermined point.

fl. ln an evaporating apparatus, a regu-- lator tank, an outlet valve from the evapo rating tank discharging into tlie regulator tank, means for maintaining a constant level ol' concentrated liquid inthe regulator tank, a specific gravity float immersed in tlie contents of tlie regulator' tank, a compound lever fulcrumed on the evaporator tank operatively connected to the outlet valve and a stem secured to the float pivoted on tne power arm of the lever, said float and lever connections being adapted to close tlie valve when the loat settles.

5. In an evaporating apparatus an upright cylindrical regulator tank, an outlet valve Jfrom the evaporating tank discharging into the regulator tank, an u right cylindrical gravity float immersed in t 1e contents of the regulator tank, a compound lever fulcrumed on knife-edge scale bearings on the evaporator tank and oV eratively connected to the outlet valve, an an axial stem secured on the float ivoted on the power arm of the lever, saidpiloat and lever connections being adapted to close the valve when the float settles.

6. in an evaporating apparatus an upright cylindrical regulator tank, an outlet valve from the evaporating tank discharging into the regulator tank, an apron distributing the loW from the valve against the rsides of the tank, an upright cylindrical specific gravity oat immersed in the contents of tlie regulator tank., a compound lever ulcrumcd on knife edge scale bearings on the evaporator 'tank operatively connected to the outlet valve and an axial stem secured to the float, pivoted on the power arm ol' tlie lever, said loat and lever connections being adapted to close the valve when the float settles,

7. In. an eva iorating apparatus, an up right cylindrical regulator tank, an outlet alve from the cvaporating tank f liscliarging into the regulator tank, an apron distributing the flow from the valve against the sides of tlie tank, a discharge )ipe from the bol;- tom ol: the regulator tank raving a discharge mouth in the plane of the level ol' the liquid. to be maintained in tlie tank, an upright cylindrical specific gravity lloat immersed in the contents oi the regulator tank, a conn pound lever fulcrun'led on knife edge scale bearinvs on the evaporator tank operatively,-

connected to the out-let valve an( an axial stem secured to the lloat and pivoted on the pov/'er arm oit' the lever, said lioat and lever connections being adapted to close lthe valve 'when the float settles.

8. in an evaporating aiparatns having an evaporating tank and outlet therefor, a regulator tank, a valve controlling the ourlet, an apron distributing tlie discharge from valve around the 'regulator tai lf., a lever oi the class iulcrumed on a link lione' troni tl'le' evaporating tank, a stein op valve connected' oy knife edge gs. to the loa-d end of said lever, second lever of the :lirst class 'liulcrumed in link 'nung from the evaporator tank, a rod having knife bearings at eacli end articulating the load arm of the second lever to the power larm of the iii-st lever, a float submerged in elle contents oi the regulator tank and suspended by a stern hung by knife edge bearings on the power arm of the second lever, a Weight ustably secured to the second lever counterbalancing the float, and a discharge from tile regulator tank above the float.

9. A continuous process evaporating a paratus comprising an evaporatin tan means tor automatically sup lying t e tank com risinf)` inlet pipe, a n ter cheminer, a supp y valve on the inlet pipe discharging into the chamber, a float adapted to operate the valve vertically movable in tlie chamber below the lilter bed, a pipe connecting the 'lter chamber and evaporatine tank, and an automatic discharging means or tlie evapo rator.

l0. A continuous process evaporating a e parata-s, comprising an evaporating 'tan Y, means for automatically controlling the supply `for the tank comprising an upright cylindrical chamber, conical cross-wall in the cylinder, a .tilter bed on tlic wall, an inlet pipe over the chamber, a valve casing` on the pipe end, a valve closure iorthe casingI seat adjustalily secured on a 'vertical stem longi tudinally reciprocalile in bearings central y secured on the conical cross-wal.. and oylin bottoni, a float below the crosswvail sosecured on the stem and means adapted to automatically regulate the outflow from the evaporator,

1i. A continuous process evaporating aoparatus comprising an evaporating tank, means for automatically controlling the supply for the tank comprising an upright cylindrical chamber, a conical cross-Well in the cylinder supported on lugs on 'tile cylinder Wall and provided with marginal notches, a

lilter bed on tlic wall, an inlet pipe over tlie chamber, a valve casini7 on tlie pipe, a valve closure for the casing .s t adjnstably secured on a vertical stem longitudinally reciprocalile in bearings centrally secured on. the con ical cross-viali ol tlie cylinder bottom, float below the cross-wall secured on the stein and ineens adapted to automatically regulate the ontllow 'l'rorn the evaporator.

12. A continuous process evaporating peretus, comprising an evaporating tan means for automatically controlling the sup! ply for the tank comprising an upri ht cylindrical chamber, a conical cross-W51 in the cylinder, a filter bed -on the Wall, an inlet pipe over the chamber, a valve casing on the ppe-end, a valve closure for the casing seat7 a justebly'secured on a vertical stemlongitudinelly reciprocable in boerin s, a float below the cross-Well secured on' t c stem, and means-adapted to automatically regulate the 'outflow from the evaporator comprising en outlet valve, e .specific ,gravity 'loat' mersed in the concentrated liquid discher ed '15 bythe Valveand o eretive connection ev tween the float endp Valve adapted to 'lose the valve Whenthe iloat falls. y f In testimony whereof I affix myeigneture in presence of two Witnesses.. y FLOYD SAWYERY." Witnesses: y y I OTTO F. BARTHEL, B. STIGKNEL. 

